Self-adjusting coke-oven closure



April 13 I926.

H. MULLER SELF ADJUSTING COKE OVEN CLOSURE Filed April 25, 1922 Patented Apr. 13, 1926.

UNITED STATES PATENT OFFICE.

HERMANN' MfiLLER, OF MUNICH, GERMANY.

SELF-ADJUSTING- COKE-OVEN CLOSURE.

Application filed April 25, 1922. Serial No. 556,548.

To all whom. it may concern:

Be it known that I, HERMANN MI'JLLER, citizen of Germany, residing at Munich, Bavaria, Germany, have invented certain new and useful Improvements in a Self-Adjusting Coke-Oven Closure; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap-pertains to make and use the same:

My invention relates to improvements in self-adjusting closures for coke ovens.

Heretofore such closures have been made hermetic by the close contact between two flat surfaces, one a planed bearing surface on the supporting frame, and the other the rear surface of the tapered edges of the door. Much importance was placed upon the flexibility'and springiness of the door, and in addition to the pressure holding the door in contact with the supporting frame, springs were used which aided the door to adjust itself by this yieldability to various irregularities in the contact plane.

In practice, it has been found that these doors are not-entirely gas-tight. Nor could warpings and distortions arising from time to time be repaired without a complete removal of the entire door and a corresponding large expense.

My invention has for its object the providing of a door of this character which will produce a closure which becomes tighter, due to a kind of wedge action between the door and its frame, as the door is pressed closed by an adjustable pressure.

I have illustrated my invention in the ac companying drawings in which Fig. 1 is a vertical longitudinal section through one of my improved doors,

Fig. 2 is a front elevation of the same,

Fig. 3 is a cross section through the line XX of Fig. 2, viewed from underneath,

and

Fig. shown in Fig. 3.

Referring to the drawings, a denotes a frame or supporting structure securely and gas-tightly riveted and welded to the walls of the oven opening. The vertical sides of this structure consist of built-up I-beams formed by two channel bars back to back with a stiffening plate between them, as clearly shown in Figs. 3 and 4. The horizontal sides of this structure are formed by channel bars facing each other. This 4 is an enlarged view of a portion staunch construction of this structure prevents any possibility of lateral bulging 01' mounted on this warping. Detachably structure is a frame of channel bar cross section, bent and welded so that its upper andlower ends are semi-circular in shape.

The connection between the structure a and the frame I) is made gas-tight, and yet the frame I) is detachable andexchangeable. I accomplish this preferably by the means shown in Fig. 4. By means of angle irons 2' and bracing members it placed at intervals along the vertical sides of the structure a,

the frame Z) is held securely against a. Be-

tween the angle z' and the structure a is a wedge 76, and the bolt connecting i to a passes through this wedge, the purpose of which will be described hereinafter.

The outer rim of the free arm of the around the entire periphery of the door, so

that the inside of this skirt will bear secure- 1y against the beveled rim. of the frame I). This method of bearing insures an absolutely tight closure of the door. The skirt 0 is stiffened by the angle iron (Z situated in the angle formed between the skirt 0 and the back face of the door. also by two longitudinally disposed parallel I-beams e and by channel bars disposed transversely of these I-beams on the front or outer face of the door. Fastened to the back of the door is the usual shield extending a slight distance into the oven chamber. The force exerted by the charge in back of the shield is borne by these I-beams e, thus avoiding serious strain upon the face of the door. The door is provided also with the usual eccentric shaft f and means for holding the door tightly closed. This shaft f has its two ends jogged slightly off center to form journals f which fit into pivot holes in floating levers f. The rearwardly disposed ends of these levers are shaped to form hooks as shown at f which engage with bolts or pins 9 which are mounted on the vertical sides of the structure a. One of the fea- It is strengthened tures of my invention lies in fastening these pins 9 to the structure a through a shackle bolt g which is adapted to be drawn closer to the structure a by means of nuts 9. Thus the pressure between the door and its seat can be regulated by adjusting the position'of the pins Another feature of my invention lies in the means for taking care of slight possible distortions of the frame I). The wedges Z: hereinbefore referred to are removable and it is thus possible to compensate for slight distortions and to accurately realign the frame Z) by substituting wedges of greater or less acuteness. It is also possible to control accurate seating of the door by mere hand-tiling of the bearing rim of frame 7), and it is not necessary to resort to planing, as heretofore. More serious distortions of the frame I) may be repaired by welding, or by attaching suitably tiled strips or shims of sheet iron to restore the proper contour. lhese repairs may be made without removing the door. If necessary, however, the en tire frame Z) is easily detached.

What I claim is:

1. A coke oven closure comprising a flanged frame and a door having a flaring portion designed to hermetically contact the edge of the flange of said frame.

2. A coke oven closure as claimed in claim 1, in which the flange contacts the door only intermediate the inner and outer edges of the flaring portion.

3. A coke oven closure as claimed in claim said flange lying in a plane parallel to the door.

A coke oven closure as claimed in claim 1, includii'ig a supporting structure, means for detachably connecting said frame and supporting structure, and wedge members cooperating with said means and frame to adjust the position of the latter.

5. A coke oven closure as claimed in claim 1, including a supporting structure for said frame, locking members pivotally connected to said door, pins connected to said supporting structure and designed to engage with said locking members, and means for controlling the position of said pins relative to said supporting structure.

6. A coke oven closure as claimed in claim including a strengthening structure rigidly attached to said door, said strengthening structure comprising a plurality of parallel longitudinal I-beams and a plurality of transverse stiffening beams.

In testimony whereof I hereunto affix my signature.

I-IERMANN MULLER. 

